References
Bell, E.T., Men of Mathematics, Simon & Schuster, NY, 1937Bold, Benjamin, Famous Problems of Geometry , Dover Publications Inc., NY, 1969
Eaves, Howard, An Introduction to the History of Mathematics, CBS College Publishing, NY, 1983
Ewards & Penney, Calculus with Analytic Geometry Early , Prentice Hall, NJ, 1998
Dunham, William, Journey Through Genius, Penquin Books, NY, 1991
MacTutor History of Mathematics, http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Babylonian_numerals.html
Mlodinow, Leonard, Euclid's Window, The Free Press, NY, 2001
Muir, Jane, Of Men & Numbers, Dover Publications, Inc., 1996
Resnikoff, H.L. and Wells, Jr., R.O., Mathematics in Cuvilization, Dover Publications, Inc., NY, 1984
Olds, C.D., Continued Fractions, Random House, NY, 1963